“The homeostatic control of water can be: · a change in water concentration which activates negative feedback control · osmoreceptors that are capable of detecting water concentration situated next to the circulatory system on the hypothalamus · chemical messages sent from the hypothalamus to the pituitary gland · pituitary gland secretes anti-diuretic hormone (ADH), targets kidney responsible for maintaining water levels · hormone reaches tissue target, it alters the tubules of the kidney to become less/more permeable to water · if more required in the blood stream, high concentrations of ADH make tubules more permeable · if less water id required in the blood stream, low concentrations of ADH make the tubules less permeable”

1. DehydrationWhen the hypothalamus detects low levels of water in the blood (negative feedback) ADH will be secreted which sends a message to the kidney to make the urine more concentrated so not as much water is lost

2. WaterloggingWhen the hypothalamus detects too much water in the blood, and the blood is too dilute, the calls absorb water via osmosis, causing them to be “waterlogged.” When in solution too dilute, cells become n danger of swelling and bursting, because of this it is important that the body uses homeostatic methods to correct itself so that the cells are not stressed because of waterlogging.

3. Water gainThe three main ways your body gains water is by drinking, receiving the water content in food and tissue respiration. The hypothalamus detects that the blood is too concentrated, so the pituitary is stimulated to produce ADH stimulating the person to drink. The amount of water received from food depends what is eaten and how much. When cells respire glucose they produce water but the amount of water that comes from that depends on how active the individual is.

4. Water lossDifferent ways that the human body can loss water is through exhaled air, evaporation through moist surfaces (like cornea), sweat, faces, lactation, vomit, spitting and urination. Every time humans breath out, water is lost, and it is something that can’t be controlled.